Coping with the growing water needs of cities is one of the most pressing challenges of this century. Half of the world’s population now lives in cities and it’s estimated that within two decades this will increase to nearly 60% of the population, or five billion people.

Two years after the BirdLife International Fiji Programme implemented an operation to eradicate rats from the Ringgold Islands, all seven islands have been confirmed rodent-free. Early monitoring also shows that the birds, people and wider wildlife of these remote islands are already benefitting from the removal of these invasive pests...